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Documents authored by Weihe, Karsten

Document
DOI: 10.4230/OASIcs.ATMOS.2012.35
Reliability and Delay Distributions of Train Connections

Authors: Mohammad H. Keyhani, Mathias Schnee, Karsten Weihe, and Hans-Peter Zorn

Published in: OASIcs, Volume 25, 12th Workshop on Algorithmic Approaches for Transportation Modelling, Optimization, and Systems (2012)

Abstract
Finding reliable train connections is a considerable issue in timetable information since train delays perturb the timetable daily. We present an effective probabilistic approach for estimating the reliability of connections in a large train network. Experiments on real customer queries and real timetables for all trains in Germany show that our approach can be implemented to deliver good results at the expense of only little processing time. Based on probability distributions for train events in connections, we estimate the reliability of connections. We have analyzed our computed reliability ratings by validating our predictions against real delay data from German Railways. This study shows that we are able to predict the feasibility of connections very well. In essence, our predictions are slightly optimistic for connections with a high rating and pretty accurate for connections with a medium rating. Only for the rare cases of a very low rating, we are too pessimistic. Our probabilistic approach already delivers good results, still has improvement potential, and offers a new perspective in the search for more reliable connections in order to bring passengers safely to their destinations even in case of delays.
Cite as

Mohammad H. Keyhani, Mathias Schnee, Karsten Weihe, and Hans-Peter Zorn. Reliability and Delay Distributions of Train Connections. In 12th Workshop on Algorithmic Approaches for Transportation Modelling, Optimization, and Systems. Open Access Series in Informatics (OASIcs), Volume 25, pp. 35-46, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2012)

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@InProceedings{keyhani_et_al:OASIcs.ATMOS.2012.35,
  author =	{Keyhani, Mohammad H. and Schnee, Mathias and Weihe, Karsten and Zorn, Hans-Peter},
  title =	{{Reliability and Delay Distributions of Train Connections}},
  booktitle =	{12th Workshop on Algorithmic Approaches for Transportation Modelling, Optimization, and Systems},
  pages =	{35--46},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-939897-45-3},
  ISSN =	{2190-6807},
  year =	{2012},
  volume =	{25},
  editor =	{Delling, Daniel and Liberti, Leo},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/OASIcs.ATMOS.2012.35},
  URN =		{urn:nbn:de:0030-drops-37014},
  doi =		{10.4230/OASIcs.ATMOS.2012.35},
  annote =	{Keywords: Stochastic Delay Propagation, Timetable Information, Connection Reliability}
}
Document
DOI: 10.4230/DagSemRep.231
Component-based Programming under Different Paradigms (Dagstuhl Seminar 99081)

Authors: Philip Wadler and Karsten Weihe

Published in: Dagstuhl Seminar Reports. Dagstuhl Seminar Reports, Volume 1 (2021)

Abstract
Cite as

Philip Wadler and Karsten Weihe. Component-based Programming under Different Paradigms (Dagstuhl Seminar 99081). Dagstuhl Seminar Report 231, pp. 1-31, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (1999)

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@TechReport{wadler_et_al:DagSemRep.231,
  author =	{Wadler, Philip and Weihe, Karsten},
  title =	{{Component-based Programming under Different Paradigms (Dagstuhl Seminar 99081)}},
  pages =	{1--31},
  ISSN =	{1619-0203},
  year =	{1999},
  type = 	{Dagstuhl Seminar Report},
  number =	{231},
  institution =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemRep.231},
  URN =		{urn:nbn:de:0030-drops-151170},
  doi =		{10.4230/DagSemRep.231},
}
Document
DOI: 10.4230/DagSemRep.207
Programs with Recursively Defined Data Structures (Dagstuhl Seminar 98161)

Authors: Michael I. Schwartzbach, Mooly Sagiv, Karsten Weihe, and Kurt Mehlhorn

Published in: Dagstuhl Seminar Reports. Dagstuhl Seminar Reports, Volume 1 (2021)

Abstract
Cite as

Michael I. Schwartzbach, Mooly Sagiv, Karsten Weihe, and Kurt Mehlhorn. Programs with Recursively Defined Data Structures (Dagstuhl Seminar 98161). Dagstuhl Seminar Report 207, pp. 1-24, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (1998)

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@TechReport{schwartzbach_et_al:DagSemRep.207,
  author =	{Schwartzbach, Michael I. and Sagiv, Mooly and Weihe, Karsten and Mehlhorn, Kurt},
  title =	{{Programs with Recursively Defined Data Structures (Dagstuhl Seminar 98161)}},
  pages =	{1--24},
  ISSN =	{1619-0203},
  year =	{1998},
  type = 	{Dagstuhl Seminar Report},
  number =	{207},
  institution =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemRep.207},
  URN =		{urn:nbn:de:0030-drops-150939},
  doi =		{10.4230/DagSemRep.207},
}
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